<!DOCTYPE HTML>
<html lang="en" >
    
    <head>
        
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <title>ES6 | 个人笔记</title>
        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
        <meta name="description" content="">
        <meta name="generator" content="GitBook 2.6.7">
        
        
        <meta name="HandheldFriendly" content="true"/>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <link rel="apple-touch-icon-precomposed" sizes="152x152" href="../../gitbook/images/apple-touch-icon-precomposed-152.png">
        <link rel="shortcut icon" href="../../gitbook/images/favicon.ico" type="image/x-icon">
        
    <link rel="stylesheet" href="../../gitbook/style.css">
    
        
        <link rel="stylesheet" href="../../gitbook/plugins/gitbook-plugin-highlight/website.css">
        
    
        
        <link rel="stylesheet" href="../../gitbook/plugins/gitbook-plugin-search/search.css">
        
    
        
        <link rel="stylesheet" href="../../gitbook/plugins/gitbook-plugin-fontsettings/website.css">
        
    
    

        
    
    
    <link rel="next" href="../../md/js/es6安装.html" />
    
    
    <link rel="prev" href="../../md/js/for循环.html" />
    

        
    </head>
    <body>
        
        
    <div class="book"
        data-level="3.12"
        data-chapter-title="ES6"
        data-filepath="md/js/ES6.md"
        data-basepath="../.."
        data-revision="Sat Oct 13 2018 16:22:38 GMT+0800 (中国标准时间)"
        data-innerlanguage="">
    

<div class="book-summary">
    <nav role="navigation">
        <ul class="summary">
            
            
            
            

            

            
    
        <li class="chapter " data-level="0" data-path="index.html">
            
                
                    <a href="../../index.html">
                
                        <i class="fa fa-check"></i>
                        
                        Introduction
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1" data-path="md/html/html介绍.html">
            
                
                    <a href="../../md/html/html介绍.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.</b>
                        
                        html介绍
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.1" data-path="md/html/html常用标签.html">
            
                
                    <a href="../../md/html/html常用标签.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.1.</b>
                        
                        html常用标签
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.2" data-path="md/html/a标签的使用.html">
            
                
                    <a href="../../md/html/a标签的使用.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.2.</b>
                        
                        a标签的使用
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.3" data-path="md/html/表格的介绍.html">
            
                
                    <a href="../../md/html/表格的介绍.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.3.</b>
                        
                        表格的介绍
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.4" data-path="md/html/列表.html">
            
                
                    <a href="../../md/html/列表.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.4.</b>
                        
                        列表
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.5" data-path="md/html/iframe内嵌框架.html">
            
                
                    <a href="../../md/html/iframe内嵌框架.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.5.</b>
                        
                        iframe内嵌框架
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.6" data-path="md/html/表单.html">
            
                
                    <a href="../../md/html/表单.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.6.</b>
                        
                        表单
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.7" data-path="md/html/媒体标签.html">
            
                
                    <a href="../../md/html/媒体标签.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.7.</b>
                        
                        媒体标签
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.8" data-path="md/html/下拉框，多行文本域以及对齐方式.html">
            
                
                    <a href="../../md/html/下拉框，多行文本域以及对齐方式.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.8.</b>
                        
                        清除样式
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="2" data-path="md/css/css引入方式.html">
            
                
                    <a href="../../md/css/css引入方式.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.</b>
                        
                        css引入方式
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="2.1" data-path="md/css/css选择符与选择器.html">
            
                
                    <a href="../../md/css/css选择符与选择器.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.1.</b>
                        
                        css选择符与选择器
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.2" data-path="md/css/css字体样式.html">
            
                
                    <a href="../../md/css/css字体样式.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.2.</b>
                        
                        css字体样式
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.3" data-path="md/css/图片的调整.html">
            
                
                    <a href="../../md/css/图片的调整.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.3.</b>
                        
                        图片的调整
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.4" data-path="md/css/伪类选择.html">
            
                
                    <a href="../../md/css/伪类选择.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.4.</b>
                        
                        伪类选择
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.5" data-path="md/css/盒子模型.html">
            
                
                    <a href="../../md/css/盒子模型.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.5.</b>
                        
                        盒子模型
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.6" data-path="md/css/浮动.html">
            
                
                    <a href="../../md/css/浮动.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.6.</b>
                        
                        浮动
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.7" data-path="md/css/定位.html">
            
                
                    <a href="../../md/css/定位.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.7.</b>
                        
                        定位
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.8" data-path="md/css/阴影.html">
            
                
                    <a href="../../md/css/阴影.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.8.</b>
                        
                        阴影
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.9" data-path="md/css/图片溢出处理.html">
            
                
                    <a href="../../md/css/图片溢出处理.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.9.</b>
                        
                        图片溢出处理
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.10" data-path="md/css/动画.html">
            
                
                    <a href="../../md/css/动画.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.10.</b>
                        
                        动画
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.11" data-path="md/css/动画插件与浏览器内核.html">
            
                
                    <a href="../../md/css/动画插件与浏览器内核.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.11.</b>
                        
                        动画插件与浏览器内核
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.12" data-path="md/css/旋转菜单.html">
            
                
                    <a href="../../md/css/旋转菜单.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.12.</b>
                        
                        旋转菜单
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.13" data-path="md/css/视口.html">
            
                
                    <a href="../../md/css/视口.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.13.</b>
                        
                        移动端
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.14" data-path="md/css/rem布局.html">
            
                
                    <a href="../../md/css/rem布局.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.14.</b>
                        
                        rem布局
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.15" data-path="md/css/权重与雪碧图.html">
            
                
                    <a href="../../md/css/权重与雪碧图.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.15.</b>
                        
                        权重问题
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.16" data-path="md/css/移动底部菜单被系统键盘顶起问题.html">
            
                
                    <a href="../../md/css/移动底部菜单被系统键盘顶起问题.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.16.</b>
                        
                        移动端导航问题
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.17" data-path="md/css/flex布局.html">
            
                
                    <a href="../../md/css/flex布局.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.17.</b>
                        
                        flex布局
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.18" data-path="md/css/fullpage的使用.html">
            
                
                    <a href="../../md/css/fullpage的使用.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.18.</b>
                        
                        fullpage
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.19" data-path="md/css/bootstrap.html">
            
                
                    <a href="../../md/css/bootstrap.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.19.</b>
                        
                        bootstrap
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.20" data-path="md/css/媒体查询.html">
            
                
                    <a href="../../md/css/媒体查询.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.20.</b>
                        
                        媒体查询
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3" data-path="md/js/js的介绍.html">
            
                
                    <a href="../../md/js/js的介绍.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.</b>
                        
                        JavaScript的介绍
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.1" data-path="md/js/JavaScript数据类型.html">
            
                
                    <a href="../../md/js/JavaScript数据类型.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.1.</b>
                        
                        JavaScript数据类型
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.2" data-path="md/js/数据类型的转换.html">
            
                
                    <a href="../../md/js/数据类型的转换.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.2.</b>
                        
                        数据类型的转换
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.3" data-path="md/js/运算符.html">
            
                
                    <a href="../../md/js/运算符.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.3.</b>
                        
                        运算符
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.4" data-path="md/js/比较运算符.html">
            
                
                    <a href="../../md/js/比较运算符.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.4.</b>
                        
                        比较运算符
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.5" data-path="md/js/赋值运算符.html">
            
                
                    <a href="../../md/js/赋值运算符.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.5.</b>
                        
                        赋值运算符
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.6" data-path="md/js/逻辑操作符.html">
            
                
                    <a href="../../md/js/逻辑操作符.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.6.</b>
                        
                        逻辑操作符
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.7" data-path="md/js/条件语句.html">
            
                
                    <a href="../../md/js/条件语句.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.7.</b>
                        
                        条件语句
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.8" data-path="md/js/条件运算符.html">
            
                
                    <a href="../../md/js/条件运算符.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.8.</b>
                        
                        条件运算符
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.9" data-path="md/js/位运算符.html">
            
                
                    <a href="../../md/js/位运算符.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.9.</b>
                        
                        位运算符
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.10" data-path="md/js/循环语句.html">
            
                
                    <a href="../../md/js/循环语句.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.10.</b>
                        
                        循环语句
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.11" data-path="md/js/for循环.html">
            
                
                    <a href="../../md/js/for循环.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.11.</b>
                        
                        for循环
                    </a>
            
            
        </li>
    
        <li class="chapter active" data-level="3.12" data-path="md/js/ES6.html">
            
                
                    <a href="../../md/js/ES6.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.12.</b>
                        
                        ES6
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.13" data-path="md/js/es6安装.html">
            
                
                    <a href="../../md/js/es6安装.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.13.</b>
                        
                        ES6安装
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.14" data-path="md/js/内置对象.html">
            
                
                    <a href="../../md/js/内置对象.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.14.</b>
                        
                        内置对象
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.15" data-path="md/js/Array对象.html">
            
                
                    <a href="../../md/js/Array对象.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.15.</b>
                        
                        Array对象
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.16" data-path="md/js/Date对象.html">
            
                
                    <a href="../../md/js/Date对象.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.16.</b>
                        
                        Date对象
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.17" data-path="md/js/布尔值对象.html">
            
                
                    <a href="../../md/js/布尔值对象.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.17.</b>
                        
                        布尔值对象
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.18" data-path="md/js/数学对象.html">
            
                
                    <a href="../../md/js/数学对象.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.18.</b>
                        
                        数学对象
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.19" data-path="md/js/对象的创建.html">
            
                
                    <a href="../../md/js/对象的创建.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.19.</b>
                        
                        对象的创建
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.20" data-path="md/js/BOM.html">
            
                
                    <a href="../../md/js/BOM.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.20.</b>
                        
                        BOM
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.21" data-path="md/js/DOM关于元素的获取.html">
            
                
                    <a href="../../md/js/DOM关于元素的获取.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.21.</b>
                        
                        DOM关于元素的获取
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.22" data-path="md/js/DOM元素对象.html">
            
                
                    <a href="../../md/js/DOM元素对象.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.22.</b>
                        
                        DOM元素对象
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.23" data-path="md/js/DOM事件练习.html">
            
                
                    <a href="../../md/js/DOM事件练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.23.</b>
                        
                        DOM事件练习
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.24" data-path="md/js/DOM鼠标事件.html">
            
                
                    <a href="../../md/js/DOM鼠标事件.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.24.</b>
                        
                        DOM鼠标事件
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.25" data-path="md/js/事件代理.html">
            
                
                    <a href="../../md/js/事件代理.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.25.</b>
                        
                        事件代理
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.26" data-path="md/js/移动端事件.html">
            
                
                    <a href="../../md/js/移动端事件.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.26.</b>
                        
                        移动端事件
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.27" data-path="md/js/无缝轮播图.html">
            
                
                    <a href="../../md/js/无缝轮播图.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.27.</b>
                        
                        无缝轮播图
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.28" data-path="md/js/鼠标事件练习.html">
            
                
                    <a href="../../md/js/鼠标事件练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.28.</b>
                        
                        鼠标事件练习
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.29" data-path="md/js/ajax.html">
            
                
                    <a href="../../md/js/ajax.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.29.</b>
                        
                        ajax
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.30" data-path="md/js/封装ajax.html">
            
                
                    <a href="../../md/js/封装ajax.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.30.</b>
                        
                        封装ajax
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.31" data-path="md/js/高德地图的使用.html">
            
                
                    <a href="../../md/js/高德地图的使用.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.31.</b>
                        
                        高德地图的使用
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.32" data-path="md/js/预加载插件使用.html">
            
                
                    <a href="../../md/js/预加载插件使用.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.32.</b>
                        
                        预加载插件使用
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="4" data-path="md/jQuery/JQ变量的声明.html">
            
                
                    <a href="../../md/jQuery/JQ变量的声明.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.</b>
                        
                        JQ变量的声明
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="4.1" data-path="md/jQuery/选择器和效果.html">
            
                
                    <a href="../../md/jQuery/选择器和效果.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.1.</b>
                        
                        选择器和效果
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.2" data-path="md/jQuery/属性.html">
            
                
                    <a href="../../md/jQuery/属性.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.2.</b>
                        
                        属性
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.3" data-path="md/jQuery/尺寸.html">
            
                
                    <a href="../../md/jQuery/尺寸.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.3.</b>
                        
                        尺寸
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.4" data-path="md/jQuery/遍历.html">
            
                
                    <a href="../../md/jQuery/遍历.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.4.</b>
                        
                        遍历
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.5" data-path="md/jQuery/正则表达式.html">
            
                
                    <a href="../../md/jQuery/正则表达式.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.5.</b>
                        
                        正则表达式
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.6" data-path="md/jQuery/jQuery事件练习.html">
            
                
                    <a href="../../md/jQuery/jQuery事件练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.6.</b>
                        
                        jQuery事件练习
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.7" data-path="md/jQuery/操作.html">
            
                
                    <a href="../../md/jQuery/操作.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.7.</b>
                        
                        操作
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.8" data-path="md/jQuery/事件.html">
            
                
                    <a href="../../md/jQuery/事件.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.8.</b>
                        
                        事件
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.9" data-path="md/jQuery/ajax.html">
            
                
                    <a href="../../md/jQuery/ajax.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.9.</b>
                        
                        ajax
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.10" data-path="md/jQuery/三级联动.html">
            
                
                    <a href="../../md/jQuery/三级联动.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.10.</b>
                        
                        三级联动
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.11" data-path="md/jQuery/滚动监听导航效果.html">
            
                
                    <a href="../../md/jQuery/滚动监听导航效果.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.11.</b>
                        
                        滚动监听导航效果
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.12" data-path="md/jQuery/悬停导航.html">
            
                
                    <a href="../../md/jQuery/悬停导航.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.12.</b>
                        
                        悬停导航
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="5" data-path="md/Vue/修饰符与条件渲染.html">
            
                
                    <a href="../../md/Vue/修饰符与条件渲染.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.</b>
                        
                        Vue修饰符与条件渲染
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="5.1" data-path="md/Vue/绑定class和style.html">
            
                
                    <a href="../../md/Vue/绑定class和style.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.1.</b>
                        
                        绑定class和style
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.2" data-path="md/Vue/排序.html">
            
                
                    <a href="../../md/Vue/排序.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.2.</b>
                        
                        排序
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.3" data-path="md/Vue/表单输入绑定.html">
            
                
                    <a href="../../md/Vue/表单输入绑定.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.3.</b>
                        
                        表单输入绑定
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.4" data-path="md/Vue/生命周期.html">
            
                
                    <a href="../../md/Vue/生命周期.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.4.</b>
                        
                        生命周期
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.5" data-path="md/Vue/自定义指令.html">
            
                
                    <a href="../../md/Vue/自定义指令.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.5.</b>
                        
                        自定义指令
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.6" data-path="md/Vue/组件.html">
            
                
                    <a href="../../md/Vue/组件.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.6.</b>
                        
                        组件
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.7" data-path="md/Vue/Vue事件练习.html">
            
                
                    <a href="../../md/Vue/Vue事件练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.7.</b>
                        
                        Vue事件练习
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.8" data-path="md/Vue/动态模板.html">
            
                
                    <a href="../../md/Vue/动态模板.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.8.</b>
                        
                        动态模板
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.9" data-path="md/Vue/插槽的使用.html">
            
                
                    <a href="../../md/Vue/插槽的使用.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.9.</b>
                        
                        插槽的使用
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.10" data-path="md/Vue/router.html">
            
                
                    <a href="../../md/Vue/router.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.10.</b>
                        
                        router
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.11" data-path="md/Vue/ajax与框架搭建.html">
            
                
                    <a href="../../md/Vue/ajax与框架搭建.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.11.</b>
                        
                        ajax与框架搭建
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.12" data-path="md/Vue/store.html">
            
                
                    <a href="../../md/Vue/store.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.12.</b>
                        
                        store
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="5.13" data-path="md/Vue/ref获取元素.html">
            
                
                    <a href="../../md/Vue/ref获取元素.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.13.</b>
                        
                        ref获取元素
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="6" data-path="md/wx/小程序.html">
            
                
                    <a href="../../md/wx/小程序.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>6.</b>
                        
                        小程序
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="6.1" data-path="md/wx/封装外部ajax路径.html">
            
                
                    <a href="../../md/wx/封装外部ajax路径.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>6.1.</b>
                        
                        封装外部ajax路径
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="6.2" data-path="md/wx/练习.html">
            
                
                    <a href="../../md/wx/练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>6.2.</b>
                        
                        练习
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="7" data-path="md/Egret/canvas.html">
            
                
                    <a href="../../md/Egret/canvas.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.</b>
                        
                        canvas
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="7.1" data-path="md/Egret/async.html">
            
                
                    <a href="../../md/Egret/async.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.1.</b>
                        
                        async
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.2" data-path="md/Egret/显示对象与容器.html">
            
                
                    <a href="../../md/Egret/显示对象与容器.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.2.</b>
                        
                        显示对象与容器
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.3" data-path="md/Egret/01.基础.html">
            
                
                    <a href="../../md/Egret/01.基础.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.3.</b>
                        
                        01.基础
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.4" data-path="md/Egret/02.对象池.html">
            
                
                    <a href="../../md/Egret/02.对象池.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.4.</b>
                        
                        02.对象池
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.5" data-path="md/Egret/03.typeScript.html">
            
                
                    <a href="../../md/Egret/03.typeScript.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.5.</b>
                        
                        03.typeScript
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.6" data-path="md/Egret/04.场景管理类.html">
            
                
                    <a href="../../md/Egret/04.场景管理类.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.6.</b>
                        
                        04.场景管理类
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="8" data-path="gitbook的安装.html">
            
                
                    <a href="../../gitbook的安装.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>8.</b>
                        
                        gitbook的安装
                    </a>
            
            
        </li>
    


            
            <li class="divider"></li>
            <li>
                <a href="https://www.gitbook.com" target="blank" class="gitbook-link">
                    Published with GitBook
                </a>
            </li>
            
        </ul>
    </nav>
</div>

    <div class="book-body">
        <div class="body-inner">
            <div class="book-header" role="navigation">
    <!-- Actions Left -->
    

    <!-- Title -->
    <h1>
        <i class="fa fa-circle-o-notch fa-spin"></i>
        <a href="../../" >个人笔记</a>
    </h1>
</div>

            <div class="page-wrapper" tabindex="-1" role="main">
                <div class="page-inner">
                
                
                    <section class="normal" id="section-">
                    
                        <p>es6&#x662F;ECMAScript&#x7684;&#x7B2C;&#x516D;&#x4E2A;&#x7248;&#x672C;&#x53F7;&#x3002;</p>
<p>Window&#x5BF9;&#x8C61;&#x6307;&#x7684;&#x5C31;&#x662F;&#x6253;&#x5F00;&#x7684;&#x6D4F;&#x89C8;&#x5668;&#x7A97;&#x53E3;&#x3002;</p>
<p>es5&#x58F0;&#x660E;&#x4E00;&#x4E2A;&#x53D8;&#x91CF;var</p>
<p>es6&#x58F0;&#x660E;&#x4E00;&#x4E2A;&#x53D8;&#x91CF;let</p>
<p>let&#x4E0D;&#x5B58;&#x5728;&#x58F0;&#x660E;&#x63D0;&#x524D;&#x3002;</p>
<p> &#x901A;&#x8FC7;let&#x58F0;&#x660E;&#x7684;&#x5168;&#x5C40;&#x53D8;&#x91CF;&#x4E0D;&#x4F1A;&#x6302;&#x8F7D;&#x5728;window&#x5BF9;&#x8C61;&#x4E0B;&#x3002;</p>
<p>&#x4E0D;&#x80FD;&#x91CD;&#x590D;&#x58F0;&#x660E;&#x540C;&#x4E00;&#x4E2A;&#x53D8;&#x91CF;</p>
<p>es6&#x65B0;&#x589E;&#x58F0;&#x660E;&#x53D8;&#x91CF;&#x7684;&#x65B9;&#x5F0F;&#xFF1A;&#x89E3;&#x6784;&#x8D4B;&#x503C;</p>
<pre><code>&#x6BD4;&#x5982;&#xFF1A;let [a,b]=[0,1];
console.log(a);//0
</code></pre><pre><code>console.log(str);&#x62A5;&#x9519;
let str = &quot;&#x6211;&#x662F;&#x901A;&#x8FC7;let&#x6765;&#x58F0;&#x660E;&#x7684;&#x5B57;&#x7B26;&#x4E32;&quot;;
let [a,b,c]=[0,1,&quot;&#x6211;&#x662F;&#x5B57;&#x7B26;&#x4E32;&quot;];
console.log(str);
console.log(a);
console.log(window.str);undefined
</code></pre><p>&#x901A;&#x8FC7;var&#x6765;&#x58F0;&#x660E;&#x7684;&#x53D8;&#x91CF;&#x4F1A;&#x6709;&#x58F0;&#x660E;&#x63D0;&#x524D;&#x7684;&#x6548;&#x679C;&#x3002;</p>
<p>&#x901A;&#x8FC7;var&#x58F0;&#x660E;&#x7684;&#x5168;&#x5C40;&#x53D8;&#x91CF;&#x4F1A;&#x81EA;&#x52A8;&#x6302;&#x8F7D;&#x5728;window&#x5BF9;&#x8C61;&#x4E0B;&#xFF0C;&#x6210;&#x4E3A;window&#x5BF9;&#x8C61;&#x4E0B;&#x7684;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x3002;</p>
<pre><code>console.log(str1);
var str1 = &quot;&#x6211;&#x662F;&#x901A;&#x8FC7;var&#x6765;&#x58F0;&#x660E;&#x7684;&#x53D8;&#x91CF;&quot;;
console.log(str1);
console.log(window.str1);
</code></pre><p>&#x5728;es5&#x4E2D;&#x6709;&#x5168;&#x5C40;&#x53D8;&#x91CF;&#x548C;&#x5C40;&#x90E8;&#x53D8;&#x91CF;</p>
<p> es5&#xFF1A;&#x5168;&#x5C40;&#x4F5C;&#x7528;&#x57DF;&#x548C;&#x5C40;&#x90E8;&#x4F5C;&#x7528;&#x57DF;</p>
<p>es6&#x65B0;&#x589E;&#x7684;&#x5757;&#x7EA7;&#x4F5C;&#x7528;&#x57DF;(&#x53EA;&#x6709;&#x901A;&#x8FC7;let&#x58F0;&#x660E;&#x624D;&#x4F1A;&#x6709;&#x7684;)&#xFF0C;&#x5B9A;&#x4E49;&#x5728;{}&#x5185;&#x7684;&#x53EB;&#x5757;&#x7EA7;&#x4F5C;&#x7528;&#x57DF;&#x3002;</p>
<p>&#x53D8;&#x91CF;&#x7684;&#x4F5C;&#x7528;&#x57DF;</p>
<p>&#x53D8;&#x91CF;&#x7684;&#x4F5C;&#x7528;&#x57DF;&#x662F;&#x6307;&#x53D8;&#x91CF;&#x7684;&#x4F5C;&#x7528;&#x8303;&#x56F4;&#xFF0C;&#x53EF;&#x5206;&#x4E3A;&#x5168;&#x5C40;&#x4F5C;&#x7528;&#x57DF;&#x548C;&#x5C40;&#x90E8;&#x4F5C;&#x7528;&#x57DF;&#x3002;</p>
<p>&#x5168;&#x5C40;&#x4F5C;&#x7528;&#x57DF;&#x5C31;&#x662F;&#x6307;&#x7684;&#x662F;&#x53D8;&#x91CF;&#x5728;&#x5168;&#x5C40;&#x8303;&#x56F4;&#x5185;&#x90FD;&#x53EF;&#x4EE5;&#x8C03;&#x7528;(&#x5373;&#x5168;&#x5C40;&#x53D8;&#x91CF;)&#x3002;</p>
<p>&#x5C40;&#x90E8;&#x4F5C;&#x7528;&#x57DF;&#x6307;&#x7684;&#x662F;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#x7684;&#x4F5C;&#x7528;&#x8303;&#x56F4;(&#x5373;&#x5728;&#x51FD;&#x6570;&#x91CC;&#x9762;)&#x3002;</p>
<pre><code>var isCheck=true;
if(isCheck){
var j=2;
let i=10;
}
console.log(j);
console.log(i);

for (var i=0;i&lt;3;i++) {
    var i=2;
    console.log(i);
}
console.log(i);
</code></pre><p>&#x901A;&#x8FC7;let&#x58F0;&#x660E;&#x7684;&#x53D8;&#x91CF;&#x5728;&#x5FAA;&#x73AF;&#x91CC;&#x9762;&#x7684;&#x65F6;&#x5019;</p>
<p>&#x5C0F;&#x62EC;&#x53F7;&#x548C;&#x5927;&#x62EC;&#x53F7;&#x5206;&#x522B;&#x5B58;&#x5728;&#x4E0D;&#x540C;&#x7684;&#x4F5C;&#x7528;&#x57DF;</p>
<p>&#x5C0F;&#x62EC;&#x53F7;&#x53EB;&#x505A;&#x7236;&#x4F5C;&#x7528;&#x57DF;&#xFF0C;&#x5927;&#x62EC;&#x53F7;&#x53EB;&#x505A;&#x5B50;&#x4F5C;&#x7528;&#x57DF;&#x3002;</p>
<pre><code>for (let k=0;k&lt;3;k++) {
    let k=2;
    console.log(k);//&#x6253;&#x5370;&#x4E09;&#x4E2A;&#x4E8C;
}
console.log(k);

var x=&quot;1&quot;;
var x=&quot;3&quot;;
console.log(x);

let y=&quot;2&quot;;
// y=&quot;5&quot;;&#x91CD;&#x65B0;&#x8D4B;&#x503C;&#x662F;&#x53EF;&#x4EE5;&#x7684;
let y=&quot;5&quot;;&#x91CD;&#x65B0;&#x58F0;&#x660E;&#x662F;&#x4E0D;&#x80FD;&#x7684;&#xFF0C;&#x4F1A;&#x62A5;&#x9519;
console.log(y);

//es6&#x53EF;&#x4EE5;&#x901A;&#x8FC7;const&#x5173;&#x8282;&#x8BCD;&#x6765;&#x58F0;&#x660E;&#x4E00;&#x4E2A;&#x5E38;&#x91CF;&#xFF0C;&#x5E38;&#x91CF;&#x662F;&#x4E0D;&#x53EF;&#x4EE5;&#x6539;&#x53D8;&#x7684;&#x3002;
const num=123;
//    num=&quot;456&quot;;   Assignment to constant variable.
console.log(num);
</code></pre><p> &#x5B57;&#x7B26;&#x4E32;&#x7684;&#x6807;&#x8BC6;&#xFF1A;&quot;&quot;/ &apos;&apos;/ ``(&#x8FD4;&#x5355;&#x5F15;&#x53F7;)</p>
<pre><code>var str3 = `&#x6211;&#x662F;&#x5B57;&#x7B26;&#x4E32;`;
console.log(typeof(str3));

var str3=&quot;&#x6211;&#x662F;&#x6D4B;&#x8BD5;&#x5B57;&#x7B26;&#x4E32;&#x62FC;&#x63A5;&#x7684;&quot;;
document.write(&quot;&lt;h1&gt;&quot;+str3+&quot;&lt;/h1&gt;&quot;);
</code></pre><p>es6&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x62FC;&#x63A5;&#x65B9;&#x6CD5;&#xFF1A;&#x53D8;&#x91CF;&#x8981;&#x7528;&#x4E00;&#x4E2A;&#x7F8E;&#x5143;&#x7B26;&#x548C;&#x5927;&#x62EC;&#x53F7;&#x5305;&#x88F9;&#x8D77;&#x6765;</p>
<pre><code>document.write(`&lt;h1&gt;${str3}&lt;/h1&gt;`);
</code></pre><p>&#x51FD;&#x6570;</p>
<pre><code>function test(num1,num2){
    return num1*num2;
}
    console.log(test(2,3));
</code></pre><p>&#x5F53;&#x6211;&#x4EEC;&#x4F20;&#x5165;&#x7684;&#x53C2;&#x6570;&#x4E0D;&#x5B9A;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;...name&#x6765;&#x88C5;&#x8F7D;&#x5176;&#x4F59;&#x7684;&#x53C2;&#x6570;</p>
<p>&#x5982;&#x4E0B;se6&#x51FD;&#x6570;&#xFF1A;</p>
<pre><code>function es6(num1,num2,...other){
    console.log(num1,num2,other);
}
    es6(1,2,3,4,5);
</code></pre><p>es6&#x53EF;&#x4EE5;&#x7ED9;&#x51FD;&#x6570;&#x7684;&#x53C2;&#x6570;&#x8BBE;&#x7F6E;&#x9ED8;&#x8BA4;&#x503C;</p>
<pre><code>function myfun(num1=3,num2=2){
    console.log(num1,num2);
}
myfun(10);
</code></pre><p>es6</p>
<p>&#x7BAD;&#x5934;&#x51FD;&#x6570;&#xFF0C;&#x662F;&#x4E00;&#x4E2A;&#x533F;&#x540D;&#x51FD;&#x6570;</p>
<h1 id="&#x7B2C;&#x4E00;&#x79CD;">&#x7B2C;&#x4E00;&#x79CD;</h1>
<pre><code>var fun = ()=&gt; console.log(123);
    fun();
//            &#x2193;  &#x4E0A;&#x9762;&#x7684;&#x7BAD;&#x5934;&#x51FD;&#x6570;&#x76F8;&#x5F53;&#x4E8E;&#x4E0B;&#x9762;&#x7684;&#x666E;&#x901A;&#x51FD;&#x6570;
function fun(){
    console.log(123);
}
</code></pre><h1 id="&#x7B2C;&#x4E8C;&#x79CD;&#x591A;&#x4E2A;&#x53C2;&#x6570;">&#x7B2C;&#x4E8C;&#x79CD;(&#x591A;&#x4E2A;&#x53C2;&#x6570;)</h1>
<pre><code>var func=(num1,num2)=&gt;{
    return num1+num2;
}
console.log(func(1,2));
</code></pre><h1 id="&#x7B2C;&#x4E09;&#x79CD;&#xFF0C;num&#x4EE3;&#x8868;&#x51FD;&#x6570;&#x7684;&#x53C2;&#x6570;">&#x7B2C;&#x4E09;&#x79CD;&#xFF0C;num&#x4EE3;&#x8868;&#x51FD;&#x6570;&#x7684;&#x53C2;&#x6570;</h1>
<pre><code>var funct=num=&gt;{
    console.log(num);
}
funct(1);
</code></pre><h1 id="promise&#x662F;&#x7528;&#x6765;&#x5904;&#x7406;&#x4E00;&#x4E9B;&#x5F02;&#x6B65;&#x64CD;&#x4F5C;&#x7684;&#xFF0C;&#x4F7F;&#x5F97;&#x6BD4;&#x4F20;&#x7EDF;&#x7684;&#x56DE;&#x8C03;&#x51FD;&#x6570;&#x7684;&#x65B9;&#x5F0F;&#x66F4;&#x5408;&#x7406;&#x7F8E;&#x89C2;">promise&#x662F;&#x7528;&#x6765;&#x5904;&#x7406;&#x4E00;&#x4E9B;&#x5F02;&#x6B65;&#x64CD;&#x4F5C;&#x7684;&#xFF0C;&#x4F7F;&#x5F97;&#x6BD4;&#x4F20;&#x7EDF;&#x7684;&#x56DE;&#x8C03;&#x51FD;&#x6570;&#x7684;&#x65B9;&#x5F0F;&#x66F4;&#x5408;&#x7406;&#x7F8E;&#x89C2;</h1>
<pre><code>            function testPromise(a,b){
                return new Promise(function(resolve,reject){
                    setTimeout(function(){
                        var res= a*b;
                        if(res&lt;8){
                            resolve(res)
                        }else{
                            reject(new Error(&quot;&#x4F20;&#x5165;&#x7684;&#x53C2;&#x6570;&#x592A;&#x5927;&quot;))
                        }
                    },100)

                })
            }testPromise(2,3)
             /*.then(function(res){//&#x6210;&#x529F;&#x7684;&#x56DE;&#x8C03;
                 console.log(res)
             })
             .catch(function(err){//&#x5931;&#x8D25;&#x7684;&#x56DE;&#x8C03;
                 console.log(err)
             })*/
              .then(function(res){//&#x6210;&#x529F;&#x7684;&#x56DE;&#x8C03;
                 console.log(res)
             },function(err){//&#x5931;&#x8D25;&#x7684;&#x56DE;&#x8C03;
                 console.log(err)
             })
</code></pre><h1 id="&#x6DF1;&#x62F7;&#x8D1D;&#x4E00;&#x4E2A;&#x6570;&#x7EC4;">&#x6DF1;&#x62F7;&#x8D1D;&#x4E00;&#x4E2A;&#x6570;&#x7EC4;</h1>
<pre><code>            var arr = [1,2,3];
            var arr1 = arr;
            console.log(arr);
            console.log(arr1);
            arr1[1]=&quot;string&quot;;
            console.log(arr,arr1);
            var arr2 = [].concat(arr);
            console.log(arr2,arr);
            arr2[1]=&quot;number&quot;;
            console.log(arr2,arr);
</code></pre><h1 id="es6-&#x4E09;&#x70B9;&#x8FD0;&#x7B97;&#x7B26;&#xFF08;&#xFF09;&#xFF0C;&#x53EF;&#x4EE5;&#x7528;&#x6765;&#x6DF1;&#x62F7;&#x8D1D;&#x4E00;&#x4E2A;&#x6570;&#x7EC4;&#x5408;&#x5E76;&#x6570;&#x7EC4;&#x5B57;&#x7B26;&#x4E32;&#x5206;&#x5272;&#x4E3A;&#x6570;&#x7EC4;">es6 &#x4E09;&#x70B9;&#x8FD0;&#x7B97;&#x7B26;&#xFF08;...&#xFF09;&#xFF0C;&#x53EF;&#x4EE5;&#x7528;&#x6765;&#x6DF1;&#x62F7;&#x8D1D;&#x4E00;&#x4E2A;&#x6570;&#x7EC4;&#x5408;&#x5E76;&#x6570;&#x7EC4;&#x5B57;&#x7B26;&#x4E32;&#x5206;&#x5272;&#x4E3A;&#x6570;&#x7EC4;</h1>
<pre><code>            function myfun(a,...list){
                console.log(list);
            }myfun(1,2,3,4,5,6,7);
            var arr3 = [...arr];
            console.log(arr3,arr);
            arr3[0]=&quot;nan&quot;;
            console.log(arr3,arr);
#&#x5408;&#x5E76;&#x6570;&#x7EC4;
            var arr4 = [&quot;html&quot;,&quot;js&quot;,&quot;css&quot;];
            var arr5 = [...arr3,...arr4];
            console.log(arr5);
#&#x89E3;&#x6784;&#x8D4B;&#x503C;
            var a=1,
                b=2;
            var [c,d]=[3,4];
            console.log(c);

            function my(c=2,d=c){
                console.log(d);
            }my();

            var str = &quot;hello&quot;;
            console.log([...str]);
</code></pre><h1 id="arrayfrom&#x5C06;&#x7C7B;&#x6570;&#x7EC4;&#x8F6C;&#x6362;&#x4E3A;&#x771F;&#x6B63;&#x7684;&#x6570;&#x7EC4;">Array.from(),&#x5C06;&#x7C7B;&#x6570;&#x7EC4;&#x8F6C;&#x6362;&#x4E3A;&#x771F;&#x6B63;&#x7684;&#x6570;&#x7EC4;</h1>
<pre><code>            let obj = {
                &quot;0&quot;:&quot;&#x5C0F;&#x660E;&quot;,
                &quot;1&quot;:&quot;12&quot;,
                &quot;2&quot;:&quot;&#x5973;&quot;,
                &quot;length&quot;:&quot;3&quot;
            }
            let arr6=Array.from(obj);
            console.log(arr6);
            var ali = document.querySelectorAll(&quot;li&quot;);
            console.log(ali);
            var arr7 = Array.from(ali);
            console.log(arr7);
</code></pre><h1 id="arrayof&#x5B9A;&#x4E49;&#x6570;&#x7EC4;">Array.of()&#x5B9A;&#x4E49;&#x6570;&#x7EC4;</h1>
<pre><code>            var arr8 = Array.of(1,2,3);
            console.log(arr8);
            var arr9 = new Array(12,1);//[12,1]
            var arr10 = Array.of(12);//[12]
            console.log(arr9,arr10);
</code></pre><h1 id="copywithin">copyWithin()</h1>
<p>&#x5C06;&#x6307;&#x5B9A;&#x4F4D;&#x7F6E;&#x7684;&#x6210;&#x5458;&#x590D;&#x5236;&#x5230;&#x5176;&#x4ED6;&#x4F4D;&#x7F6E;(&#x4F1A;&#x8986;&#x76D6;&#x539F;&#x6709;&#x6210;&#x5458;)&#xFF0C;&#x7136;&#x540E;&#x8FD4;&#x56DE;&#x5F53;&#x524D;&#x6570;&#x7EC4;</p>
<pre><code>            var arr11 = [1,2,3,4,5,8,6,7,10];
            arr11.copyWithin(1,3,4);
            console.log(arr11);
</code></pre><p>find(function(item,index){</p>
<p>&#x8FD4;&#x56DE;&#x7B26;&#x5408;&#x6761;&#x4EF6;&#x7684;&#x7B2C;&#x4E00;&#x4E2A;&#x503C;</p>
<p> })</p>
<pre><code>            var arr12 = arr11.find(function(item,index){
                return item&lt;5;
            })
            console.log(arr12)//1
</code></pre><p> fill()</p>
<p> &#x7B2C;&#x4E00;&#x4E2A;&#x53C2;&#x6570;&#x4E3A;&#x6539;&#x53D8;&#x540E;&#x7684;&#x503C;&#xFF0C;</p>
<p>fill&#x65B9;&#x6CD5;&#x8FD8;&#x53EF;&#x4EE5;&#x63A5;&#x53D7;&#x7B2C;&#x4E8C;&#x4E2A;&#x53C2;&#x6570;&#x548C;&#x7B2C;&#x4E09;&#x4E2A;&#x53C2;&#x6570;&#xFF0C;&#x7528;&#x4E8E;&#x6307;&#x5B9A;&#x586B;&#x5145;&#x7684;&#x8D77;&#x59CB;&#x4F4D;&#x7F6E;&#x548C;&#x7ED3;&#x675F;&#x4F4D;&#x7F6E;</p>
<pre><code>            var arr13 = new Array(1,2,3);
            arr13.fill(7);
            console.log(arr13);
</code></pre><p>for...of&#x5FAA;&#x73AF;&#x7528;&#x4E8E;&#x5FAA;&#x73AF;&#x6570;&#x7EC4;&#x6216;&#x8005;&#x5BF9;&#x8C61;</p>
<p> &#x4F8B;&#x5982;</p>
<p>for(var i of arr){</p>
<p>&#x8FD9;&#x91CC;&#x7684;i&#x503C;&#x5C31;&#x4EE3;&#x8868;&#x4E86;&#x6570;&#x7EC4;&#x91CC;&#x9762;&#x7684;&#x6BCF;&#x4E00;&#x4E2A;&#x5143;&#x7D20;</p>
<p> }</p>
<pre><code>            var arr = [&quot;html&quot;,&quot;js&quot;,&quot;css&quot;];
            for (var i of arr) {
                console.log(i)
            }
</code></pre><h1 id="setes6&#x63D0;&#x4F9B;&#x7684;&#x4E00;&#x79CD;&#x65B0;&#x7684;&#x6570;&#x636E;&#x7ED3;&#x6784;&#xFF0C;&#x7C7B;&#x4F3C;&#x4E8E;&#x6570;&#x7EC4;&#xFF0C;&#x4F46;&#x5176;&#x503C;&#x5177;&#x6709;&#x552F;&#x4E00;&#x6027;">set:es6&#x63D0;&#x4F9B;&#x7684;&#x4E00;&#x79CD;&#x65B0;&#x7684;&#x6570;&#x636E;&#x7ED3;&#x6784;&#xFF0C;&#x7C7B;&#x4F3C;&#x4E8E;&#x6570;&#x7EC4;&#xFF0C;&#x4F46;&#x5176;&#x503C;&#x5177;&#x6709;&#x552F;&#x4E00;&#x6027;</h1>
<pre><code>            var arr = [1,2,3,1,2,3,4,5,5];
            var arr1=new Set(arr);
            Array.from(arr1);
            console.log(arr1);
            console.log(Array.from(arr1));

            //&#x6570;&#x7EC4;&#x53BB;&#x91CD;:&#x65B9;&#x6CD5;&#x4E00;
            var arr1 = Array.from(new Set(arr));
            console.log(arr1);
            //&#x65B9;&#x6CD5;&#x4E8C;
            console.log([...new Set(arr)]);
</code></pre><pre><code>            var st=new Set([1,2,3]);
            console.log(st);
            st.add(5);//&#x6DFB;&#x52A0;&#x5143;&#x7D20;
            console.log(st);
            st.delete(2);//&#x5220;&#x9664;&#x5143;&#x7D20;
            console.log(st);
            console.log(st.has(1));//&#x68C0;&#x67E5;&#x91CC;&#x9762;&#x662F;&#x5426;&#x6709;1   true
            st.clear();//&#x6E05;&#x7A7A;&#x91CC;&#x9762;&#x7684;&#x5143;&#x7D20;
            console.log(st);
            console.log(st.keys())
            for (var i of st.keys()) {
                console.log(i)
            }
</code></pre><pre><code> Object.keys&#xFF0C;Object.values

 &#x83B7;&#x53D6;&#x5BF9;&#x8C61;&#x7684;&#x952E;&#x540D;&#x548C;&#x952E;&#x503C;
</code></pre><pre><code>        var obj = {
            &quot;name&quot;:&quot;&#x5C0F;&#x660E;&quot;,
            &quot;age&quot;:&quot;12&quot;,
            &quot;sex&quot;:&quot;&#x7537;&quot;
        }
        console.log(Object.keys(obj))//&#x62FF;&#x5230;&#x952E;&#x540D;
        console.log(Object.values(obj))//&#x952E;&#x503C;
</code></pre><pre><code>#&#x7C7B;&#x548C;&#x7C7B;&#x7684;&#x7EE7;&#x627F;
</code></pre><pre><code>        function Person(name,age,sex){
            this.name=name,
            this.age=age,
            this.sex=sex,
            this.skill=function(){
                console.log(&quot;123&quot;)
            },
            Person.prototype.say=function(){
                console.log(1548)
            }

        }
        var person = new Person(&quot;&#x5C0F;&#x82B3;&quot;,&quot;12&quot;,&quot;&#x5973;&quot;);
        person.say();

        class Human{
            constructor(name,age,sex){
                this.name=name,
                this.age=age,
                this.sex=sex
            }
            skill(){
                console.log(489);
            }
        }
        var human = new Human(&quot;&#x5C0F;&#x54E5;&quot;,&quot;23&quot;,&quot;nan&quot;);
        human.skill();

        class Students extends Human{
            constructor(){
                super();
            }
        }
        var students = new Students();
        console.log(students);
        students.skill();
</code></pre><p>```</p>

                    
                    </section>
                
                
                </div>
            </div>
        </div>

        
        <a href="../../md/js/for循环.html" class="navigation navigation-prev " aria-label="Previous page: for循环"><i class="fa fa-angle-left"></i></a>
        
        
        <a href="../../md/js/es6安装.html" class="navigation navigation-next " aria-label="Next page: ES6安装"><i class="fa fa-angle-right"></i></a>
        
    </div>
</div>

        
<script src="../../gitbook/app.js"></script>

    
    <script src="../../gitbook/plugins/gitbook-plugin-search/lunr.min.js"></script>
    

    
    <script src="../../gitbook/plugins/gitbook-plugin-search/search.js"></script>
    

    
    <script src="../../gitbook/plugins/gitbook-plugin-sharing/buttons.js"></script>
    

    
    <script src="../../gitbook/plugins/gitbook-plugin-fontsettings/buttons.js"></script>
    

    
    <script src="../../gitbook/plugins/gitbook-plugin-livereload/plugin.js"></script>
    

<script>
require(["gitbook"], function(gitbook) {
    var config = {"highlight":{},"search":{"maxIndexSize":1000000},"sharing":{"facebook":true,"twitter":true,"google":false,"weibo":false,"instapaper":false,"vk":false,"all":["facebook","google","twitter","weibo","instapaper"]},"fontsettings":{"theme":"white","family":"sans","size":2},"livereload":{}};
    gitbook.start(config);
});
</script>

        
    </body>
    
</html>
